55658-11-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55658-11-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,6,5 and 8 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 55658-11:
(7*5)+(6*5)+(5*6)+(4*5)+(3*8)+(2*1)+(1*1)=142
142 % 10 = 2
So 55658-11-2 is a valid CAS Registry Number.